VERIFIED SOLUTION i
Error observed while trying to run 'Purge' command:
This could be caused if command is copied from a document (notepad etc) and pasted on the command prompt to execute. Sometimes, this could lead to some unexpected invisible characters present in the command.
ResolutionUPDATED: April 19, 2017
Type purge command manually on the command prompt. In case issue remains unresolved, contact Client Support.